Requirements for pNFS Layout Types
draft-ietf-nfsv4-layout-types-11
| The information below is for an old version of the document | |||
|---|---|---|---|
| Document | Type | Active Internet-Draft (nfsv4 WG) | |
| Last updated | 2018-04-19 (latest revision 2018-02-27) | ||
| Stream | IETF | ||
| Intended RFC status | Proposed Standard | ||
| Formats | plain text pdf html bibtex | ||
| Reviews | |||
| Stream | WG state | Submitted to IESG for Publication | |
| Document shepherd | Spencer Shepler | ||
| Shepherd write-up | Show (last changed 2018-01-14) | ||
| IESG | IESG state | IESG Evaluation::AD Followup | |
| Consensus Boilerplate | Yes | ||
| Telechat date |
Has enough positions to pass. |
||
| Responsible AD | Spencer Dawkins | ||
| Send notices to | (None) | ||
| IANA | IANA review state | Version Changed - Review Needed | |
| IANA action state | None | ||
NFSv4 T. Haynes
Internet-Draft Primary Data
Updates: 5661 (if approved) April 19, 2018
Intended status: Standards Track
Expires: October 21, 2018
Requirements for pNFS Layout Types
draft-ietf-nfsv4-layout-types-11.txt
Abstract
This document defines the requirements which individual pNFS layout
types need to meet in order to work within the parallel NFS (pNFS)
framework as defined in RFC5661. In so doing, it aims to clearly
distinguish between requirements for pNFS as a whole and those
specifically directed to the pNFS File Layout. The lack of a clear
separation between the two set of requirements has been troublesome
for those specifying and evaluating new Layout Types. In this
regard, this document updates RFC5661.
Status of This Memo
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This Internet-Draft will expire on October 21, 2018.
Copyright Notice
Copyright (c) 2018 IETF Trust and the persons identified as the
document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal
Provisions Relating to IETF Documents
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publication of this document. Please review these documents
carefully, as they describe your rights and restrictions with respect
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to this document. Code Components extracted from this document must
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Definitions . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.1. Use of the Terms "Data Server" and "Storage Device" . . . 5
2.2. Requirements Language . . . . . . . . . . . . . . . . . . 6
3. The Control Protocol . . . . . . . . . . . . . . . . . . . . 6
3.1. Control Protocol Requirements . . . . . . . . . . . . . . 8
3.2. Previously Undocumented Protocol Requirements . . . . . . 9
3.3. Editorial Requirements . . . . . . . . . . . . . . . . . 10
4. Specifications of Original Layout Types . . . . . . . . . . . 11
4.1. File Layout Type . . . . . . . . . . . . . . . . . . . . 11
4.2. Block Layout Type . . . . . . . . . . . . . . . . . . . . 12
4.3. Object Layout Type . . . . . . . . . . . . . . . . . . . 13
5. Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
6. Security Considerations . . . . . . . . . . . . . . . . . . . 15
7. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 15
8. References . . . . . . . . . . . . . . . . . . . . . . . . . 15
8.1. Normative References . . . . . . . . . . . . . . . . . . 15
8.2. Informative References . . . . . . . . . . . . . . . . . 16
Appendix A. Acknowledgments . . . . . . . . . . . . . . . . . . 16
Appendix B. RFC Editor Notes . . . . . . . . . . . . . . . . . . 16
Author's Address . . . . . . . . . . . . . . . . . . . . . . . . 16
1. Introduction
The concept of layout type has a central role in the definition and
implementation of Parallel Network File System (pNFS) (see
[RFC5661]). Clients and servers implementing different layout types
behave differently in many ways while conforming to the overall pNFS
framework defined in [RFC5661] and this document. Layout types may
differ as to:
o The method used to do I/O operations directed to data storage
devices.
o The requirements for communication between the metadata server
(MDS) and the storage devices.
o The means used to ensure that I/O requests are only processed when
the client holds an appropriate layout.
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o The format and interpretation of nominally opaque data fields in
pNFS-related NFSv4.x data structures.
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